Brookfield LFRA Texture Analyzer Manuel d'utilisateur télécharger pdf (Page 26)

Brookeld Engineering Labs., Inc. Page 26 Manual No. M/05-370-B0507

RESULTS: PARAMETER UNIT 2mm 4mm 6mm

HARDNESS (g) 334 722 1159

CONSISTENCY (gs) 3192.3 1278.6 23878.9

ADHESION (g) -18 -60 -15.1

FORCE

ADHESIVENESS (gs) -0.4 -4.1 -180

where:gs=work

NOTE:Adhesionforcesgivegreatestdifferentiation.

CONCLUSIONS: This empirical procedure generates key information related to the param-

eters of chocolate hardness and consistency, while additional information

relating to adhesion is also formed. Adhesion forces were not considered

paramounttotheinvestigationduetodifcultiesinimitatingoralmastica-

tionproperties.Apenetrationdepthof4mm(approx.50%deformation

orstrain)wasconsideredoptimumingeneratingkeyproledataandis

recommended for future investigation using the 1kg LFRA TA apparatus,

where prevention of upload forces is critical.

EMPIRICAL Testconditionswillbeaffectedby:

FACTORS: 1. Sample temperature

2. Proximity of test holes within sample

3. Ambient temperatures

  4. Baseeffectswhereprobecompressesagainstanalyzertestbed

  Rheologyofchocolateisinuencedby:

1. Cocoa solids content

2. Cocoa butter content

3. Solid fat content

  4. Crystalmodication(actingasanindicationoftemperatureabuse).

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Brookfield LFRA Texture Analyzer Manuel d'utilisateur Page 26